I currently have Melbourne Univ account which require me to use Cisco VPN to keep the account alive.
If I use the account directly connect to ezproxy without VPN connection, the account dead instantly.
The problem i have while using VPN is that the connection speed is tooooooo slow, virtually not usable.

My question is, the problem I have will be solved if I use commecial VPN service like NordVPN ?

I also had speed issues using some VPN programs.
I currently use the VPN that comes with Kaspersky. It is powered by Hotspot Shield and I found the internet speed very good when it is active (compared to others I've tested).
I have not tested with university accounts.
They are paid services, but I think it's worth testing the free version for those who want to do some testing. If this happens, put your review here.